The app is disabled by default because it requires some features that are not quite ready to be completely supported across CDH and CM just yet, but look for them in a future release. You can find the details about getting it working here: http://gethue.com/a-new-spark-web-ui-spark-app/.   Specifically, you can enable the app by adding the following to the "Hue Service Advanced Configuration Snippet" (safety valve in CM configuration for Hue): [desktop] app_blacklist= You will also need to download, configure and start the Spark Job Server, which is not an official component of Spark at the moment - you can find all those details on that page as well.   Good luck! ... View more